CH181249A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH181249A
CH181249A CH181249DA CH181249A CH 181249 A CH181249 A CH 181249A CH 181249D A CH181249D A CH 181249DA CH 181249 A CH181249 A CH 181249A
Authority
CH
Switzerland
Prior art keywords
azo dye
amino
preparation
red
clear
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH181249A publication Critical patent/CH181249A/en

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Description

  

  Verfahren zur Herstellung eines     Azofarbstoifes.       Es wurde gefunden, dass man einen wert  vollen     Azofarbstoff    erhält, wenn man die       Diazoverbindung    von     1-Amino-2-ohlor-4-nitro-          benzol    mit     (N-Äthyl-N-phenyl-)-ss-amino-pro-          pionsäurenitril    kuppelt.  



  Der neue     Azofarbstoff    eignet sich vor  züglich zum Färben von     Celluloseestern    und       -äthern,    die er in sehr klaren, leuchtend  scharlachroten     Tönen    färbt, ferner zur Her  stellung gefärbter Firnisse, Spiritus- oder       Nitrocelluloselacke,    die damit klare rote  Überzüge geben; Stearin, Paraffin, Fette und  Öle werden gelbrot gefärbt.

      <I>Beispiel:</I>    173 Teile     1-Amino-2-chlor-4-nitrobenzol          werden        diazotiert    und mit einer Lösung von  180 Teilen     (N-Äthyl-N-phenyl)-p-amino-pro-          pion-säure-nitril    in 250 Teilen konzentrierter  Salzsäure und 2000 Teilen Wasser unter    Zusatz von soviel     Natriumacetat    gekuppelt  dass die Lösung nicht mehr mineralsauer ist.  Die Kupplung ist nach kurzer Zeit beendet.



  Process for the production of an azo dye. It has been found that a valuable azo dye is obtained if the diazo compound of 1-amino-2-chloro-4-nitrobenzene is coupled with (N-ethyl-N-phenyl) -s-amino-propionic acid nitrile .



  The new azo dye is particularly suitable for dyeing cellulose esters and ethers, which it dyes in very clear, bright scarlet shades, and also for producing colored varnishes, spirit or nitrocellulose varnishes, which give them clear red coatings; Stearin, paraffin, fats and oils are colored yellow-red.

      <I> Example: </I> 173 parts of 1-amino-2-chloro-4-nitrobenzene are diazotized and treated with a solution of 180 parts (N-ethyl-N-phenyl) -p-amino-propionic acid -nitrile coupled in 250 parts of concentrated hydrochloric acid and 2000 parts of water with the addition of enough sodium acetate that the solution is no longer mineral acid. The coupling ends after a short time.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-Amino-2-chlor-4-nitro- benzol mit (N-Äthyl-N-phenyl-)-p-amino-pro- pionsäurenitril kuppelt. PATENT CLAIM: Process for the production of an azo dye, characterized in that the diazo compound of 1-amino-2-chloro-4-nitrobenzene with (N-ethyl-N-phenyl -) - p-amino-propionic acid nitrile clutch. Der neue Azofarbstoff eignet sich vor-. züglich zum Färben von Celluloseestern und -äthern, die er in sehr klaren, leuchtend scharlachroten Tönen färbt, ferner zur Her stellung gefärbter Firnisse, Spiritus- oder Nitrocelluloselacke, die damit klare rote Überzüge geben; Stearin, Paraffin, Fette und Öle werden gelbrot gefärbt. The new azo dye is suitable for. Plus for the dyeing of cellulose esters and ethers, which he dyes in very clear, bright scarlet shades, also for the manufacture of colored varnishes, spirit or nitrocellulose lacquers that give clear red coatings; Stearin, paraffin, fats and oils are colored yellow-red.
CH181249D 1934-03-22 1935-02-06 Process for the preparation of an azo dye. CH181249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE181249X 1934-03-22

Publications (1)

Publication Number Publication Date
CH181249A true CH181249A (en) 1935-12-15

Family

ID=5715121

Family Applications (1)

Application Number Title Priority Date Filing Date
CH181249D CH181249A (en) 1934-03-22 1935-02-06 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH181249A (en)

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